Suppose you want to have $300,000 for retirement in 20 years. Your account earns 4% interest compounded monthly. (a) How much would you need to deposit in the account each month? Round to the nearest cent. (b) How much interest will you earn? Round to the nearest cent. Suppose you want to have $300,000 for retirement in 20 years. Your account earns 4% interest compounded monthly. (a) How much would you need to deposit in the account each month? Round to the nearest cent. (b) How much interest will you earn? Round to the nearest cent